WASTE MANAGEMENT AND WATER QUALITY ISSUES IN

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WASTE MANAGEMENT AND WATER QUALITY ISSUES
IN COASTAL STATES OF NIGERIA THE OGUN
STATE EXPERIENCE By D. O. Omole1 and S. A.
Isiorho2 1Dept. of Civil Engineering Covenant
University, Ota, Ogun State, Nigeria 2Dept. of
Geosciences, Indiana Univ. - Purdue Univ. Ft.
Wayne (IPFW) Fort Wayne, Indiana, USA.
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Presentation Outline

• Introduction
• Method
• Aim Study Area
• Results and Discussions
• Conclusions and Recommendations

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Introduction

• About one quarter of Nigerians live in the
  coastal zone (UNEP, 2007 FRN, 2007)
• There is strong positive correlation between
  population and waste generated.
• The coastal states in Nigeria are Akwa-Ibom,
  Bayelsa, Cross-Rivers, Delta, Edo, Lagos, Ogun,
  Ondo and Rivers.
• Lagos accounts for 60 of all Nigerias
  industrial activities most waste generated are
  hazardous 80 never treated

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• OGUN STATE
• Ogun State is the nearest neighbour to Lagos
  state.
• The location of Ogun State makes it to partake in
  both the benefits and ill effects of the economic
  activities of Lagos State.

Ota, Ogun State.
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Aim Study area, Ogun State

• Aim of study is to examine the effect of abattoir
  (slaughter house) effluents on the water quality
  of River Illo that eventually empties into the
  nearby lagoon.
• Segments of this river traverse major urban
  centers and rural areas. Several industries
  discharge untreated wastes directly to the river.
  Some individuals also dispose of their human
  wastes into the same river.

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Methods
Field studies were carried out in Ogun state
using field, interviews and literature
research. Triplicate water samples from 7 sites
were obtained and tested for dissolved oxygen
(DO), biological oxygen demand (BOD),
conductivity, nitrate, phosphate, and total
dissolved solids (TDS). Using titrimetric
methods and spectrometer (nitrate, nitrite,
ammonia, phosphate)
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Results and Discussions
Summary of water quality data is presented in
the table below
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BOD had a mean value of 312.9mg/l, higher than
15mg/l limit for drinking water. Total solids
mean was of 608mg/l higher than 500mg/l. the
standard
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The pH is slightly acidic. Phosphates, Nitrate
level and conductivity values are low. BOD, and
TDS within the WHO acceptable standards. .
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Butchers typically wash animal entrails and
expose animal bones, and sludge to the river.
Increased suspended solids and phosphate lead
to exposure of people to zoonotic diseases
(Olugasa et al., 2000). Increase population
increase in waste amount generated.
Collection/disposal are inadequate. Educate
masses of consequences of improper waste disposal.
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Conclusions and Recommendations
Increase migration to coastal states of Nigeria
would lead to increase in waste
generation. Abattoirs are potential sources of
water pollution. Cradle to grave approach that
includes health and economic effect, and societal
obligations should be emphasized. Education of
all Stake holders. People should be made aware of
their social responsibility of caring for the
environment.
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FINALLY
Government should enforce environmental laws,
encourage people to reduce, reuse, recycle and
properly dispose of their wastes by charging fees
for their waste disposal services. YOU CAN BE
PART OF THE SOLUTION
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Thanks Any Questions?